Aminoarylalkyltoluolsulfamid azodyes



Patented June 2, 1925,

UNITED STATES retain PATENT OFFICE.

HEINRICH CLINGESTEIN, GE COLDGNE-QN-THE-REIINE, GERMANY, ASSIGNOR- TO FAR- BENIABRIKEN VGRM. FEIEDB. BAYER AND (.30., 0E LEVERKUSEN, NEAR COLOGNE- ON-THE-RHINE, GERMANY.

AMINOARYLALKYLTOLUOLSULFAMID AZODYES.

No Drawing.

T0 aZZ whom it may concern Be it known that I, HEINRICH Cranes- STEIN, a citizen of Germany, residing at Cologne-on-the-Rhine, in the State of Prussia, Germany, have invented new and useful Improvements in Aniinoarylalkyltoluolsulfamid Azodyes, of which the following is a specification.

I have found that new and valuable azodyes for wool can be obtained by combining diazocompounds of ortho-arninoarylsulfoalkylanilides, e. g. 2-arninophenylhydroXyethyl-para-toluolsulfamide h a v in g most probably the formula:

CIR;

CHg- CHR'OH s m-N pulverized in the shape of their salts with alkali metals reddish powders soluble in water generally with a yellow to orange to bluish-red coloration and in concentrated sulfuric acid generally with a reddish coloration. They yield upon reduction with stannous chlorid and hydrochloric acid an ortho-aminoarylsulfonalkylanilide and the aminocoinpound of the azocompound used. They dye wool from acid bath from yellow to orange to blue-red shades fast to milling which are distinguished by their good equal izing properties.

In order to illustrate my invention more fully, the following example is given, the parts being by weight :-30.6 partsof Q-aminophenyl-hydroxyethyl-para toluol sulfa- :nide; (melting point 1451l6 C.) are di- Application'filed. January 3, 1924. Serial Ne l-384,258.

azotized and; coupled with 24 parts of 2- naphthol-8-sulfonic acid in a soda-alkaline solution. The *dye having most probably. the formula S OiH is split up into 1-ainino-2-naphthol-8-sulfonic acid and 2-aminophenyl-hydroxyethylpara-toluolsulfamide.

I claim p l. The herein described new azodyes obtainable by combining diazocoinpounds of ortho-aminoarysulfonalkylanili-des with an azodyestufi component, which dyes are after being dried and pulverized in the shape of their alkali metal salts reddish powders sol uble in water generally with a yellow to orange to bluish-red coloration and in concentrated sulfuric acid generally with a reddish coloration; being split up by treatment with stannous chloride and hydrochloric acid into an ortho-aminoarylsulfonalkylanilide and the aminocompound of the amcompound used: dyeing wool from acid bath from yellow to orange to blue-red shades fast to milling which shades are distin= guis'hed by their good equalizing properties; substantially as described.

. 2. The herein described new azodye havmg most probably the formula CHg- CH OH obtainhle by combining the dia'zocompound of 2-aminophenyl-hydroxyethyl-para-tol- 20 uolsulfamide with Q-naphthol-S-sulfonic acid, which dye is after being dried and pulverized in the shape of its sodium salt ared powder soluble in Water witha yellow and in concentrated sulfuric acid with a reddishyellow coloration; being split up upon treatment With stannous chlorid and hydro'chlo ric acid into 1-amino-Q-haphthol-S-sulfonic acid and 2-'an1inop'henyl hydroxyethyl-paratoluolsulfamide dyeing wool orange shades fast-to inilling, substantially as described.

In testimony whereof I have hereunto set my hand.

HEIN-RiCH GLINGEST-EIN. 

